What trig function do i use for this problem?

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

Asquare has a perimeter of sixteen centimeters. what is the length of each of its sides? a. 8 cm c. 9 cm b. 4 cm d. 10 cm select the best answer from the choices